[AMRadio] 18.150 ?
I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? Paul/VJB TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] 18.150 ?
Paul, Lots of BA AM rigs will accommodate a 6050 crystal and tune up just fine on 18.150 when the band selected is either 20m or 15m. Maybe Brian Carling has some of these crystals? Jim JKO - Original Message From: VJB [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Wednesday, May 9, 2007 5:58:01 AM Subject: [AMRadio] 18.150 ? I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? Paul/VJB TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Dayton Hamvention
If there anything that bring out to Dayton next week from our vast inventory of parts, test equipment, etc. at the Collins Radio Center, please let me know. What are your needs? Thank you Dave, W3ST/W3CRA Publisher of the Collins Journal Secretary to the Collins Radio Association www.collinsra.com - the CRA Website Now with PayPal CRA Nets: 3.805 Mhz every Monday at 8 PM EDST and 14.253 Mhz every Saturday at 12 Noon EDST Collins Chatroom - Daily at 5 PM EDST on 7.208 Mhz __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] 18.150 ?
Hey Paul, Your basic BC-610 will get there either with the proper crystal, or even the tuning unit TU-54. I am reasonably sure the RF Plate coil C-449B would handle it as well. It is recommended though that you have checked the neutralizing before operation, but it could be done. Same with the Millen exciter/modulator/amplifier combo, with xtal control. As for the dipole, how about a loop, not overly large, and might get better coverage in a single region. FWIW Jim WB2FCN - Original Message - From: VJB [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Wednesday, May 09, 2007 6:58 AM Subject: [AMRadio] 18.150 ? I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? Paul/VJB TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Connectors
Does anyone know of a source for the old style spade and eye connectors? Not the new fangled things with blue, red, yellow, etc. collars, but the old heavy duty connectors like used in the BC-610 or old broadcast transmitters. I always save every one I find or remove, but I have run out. I have been using the newer ones and just removing the color coded collars, but they are just too light weight. I am afraid the old style is no longer available new like most other stuff from the good old days. All help locating a bunch of these old timers is greatly appreciated. Thanks, Rick/K5IZ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Connectors
Hi Rick, On most of the newer style connectors, the colored collars can be easily removed by cutting along the length with a pair of dikes. The result is a bare lug to which the wire may be crimped or soldered. 73, John, W4AWM ** See what's free at http://www.aol.com. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] 18.150 ?
I've been using my 160 M inverted vee on 18 MHz. Loads up fine and seems to work great. Have worked lots of DX. Pete, wa2cwa On Wed, 9 May 2007 07:53:50 -0400 James M. Walker [EMAIL PROTECTED] writes: Hey Paul, Your basic BC-610 will get there either with the proper crystal, or even the tuning unit TU-54. I am reasonably sure the RF Plate coil C-449B would handle it as well. It is recommended though that you have checked the neutralizing before operation, but it could be done. Same with the Millen exciter/modulator/amplifier combo, with xtal control. As for the dipole, how about a loop, not overly large, and might get better coverage in a single region. FWIW Jim WB2FCN - Original Message - From: VJB [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Wednesday, May 09, 2007 6:58 AM Subject: [AMRadio] 18.150 ? I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? Paul/VJB __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Connectors
Rick, check with a large automotive/truck supply house in your area. That is where I get mine. Dave, W3ST/W3CRA Publisher of the Collins Journal Secretary to the Collins Radio Association www.collinsra.com - the CRA Website Now with PayPal CRA Nets: 3.805 Mhz every Monday at 8 PM EDST and 14.253 Mhz every Saturday at 12 Noon EDST Collins Chatroom - Daily at 5 PM EDST on 7.208 Mhz - Original Message - From: Rick Brashear [EMAIL PROTECTED] To: AMRadio@mailman.qth.net Sent: Wednesday, May 09, 2007 11:57 AM Subject: [AMRadio] Connectors Does anyone know of a source for the old style spade and eye connectors? Not the new fangled things with blue, red, yellow, etc. collars, but the old heavy duty connectors like used in the BC-610 or old broadcast transmitters. I always save every one I find or remove, but I have run out. I have been using the newer ones and just removing the color coded collars, but they are just too light weight. I am afraid the old style is no longer available new like most other stuff from the good old days. All help locating a bunch of these old timers is greatly appreciated. Thanks, Rick/K5IZ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Connectors
On 5/9/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hi Rick, On most of the newer style connectors, the colored collars can be easily removed by cutting along the length with a pair of dikes. The result is a bare lug to which the wire may be crimped or soldered. Often times, I've been able to slide those collars off with a bit of force and turning, before soldering of course... __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Re: Connectors
[EMAIL PROTECTED] writes: Hi Rick, On most of the newer style connectors, the colored collars can be easily removed by cutting along the length with a pair of dikes. The result is a bare lug to which the wire may be crimped or soldered. 73, John, W4AWM Or, simply heat up the lug with your soldering iron, and the offending plastic collar slides right off. It doesn't take much heat. -Larry/NE1S __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Dayton Weather
For what it is worth: long range forecast for the 17, 18, calls for mostly sunny with temperatures in the 70's. Can this be true!! Weathermen have known to be wrong before. Dave, W3ST/W3CRA Publisher of the Collins Journal Secretary to the Collins Radio Association www.collinsra.com - the CRA Website Now with PayPal CRA Nets: 3.805 Mhz every Monday at 8 PM EDST and 14.253 Mhz every Saturday at 12 Noon EDST Collins Chatroom - Daily at 5 PM EDST on 7.208 Mhz __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Re: 18.150 ?
VJB writes: I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? A few years back I tried loading up the PDM rig on 18 MHz. It's been on 15M and 20M successfully, and the grid and plate tank components are continuously variable, so why not? Well, it didn't like it one bit. I suspected a resonance near 18MHz in the plate choke, but didn't verify it. Fortunately the only damage was melted plastic insulation on the HV lead to the plate choke. But I have other rigs that I can try there. -Larry/NE1S __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Connectors
Hi Rick! I know exactly the type you mean. They are made of at least twice the guage metal, tin plated copper, and are meant to be soldered not crimped. Still have a very few myself. I would look for a Marine, Railroad, or other low voltage/high current supplier. The TB yellow 10ga connectors are closest in metal ga. if US made. Most of the connector kits are imported junk. Good Luck, Bill, KB3DKS/1 __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Re: [Boatanchors] Dayton Weather
We'll know the morning of each day, and sometimes, each hour. If it didn't some variation of sun, rain, snow, threatening skies, 30 mph winds, etc. sometime during the 3 day period, would it really be the Dayton Hamvention. Pete, wa2cwa On Wed, 9 May 2007 12:44:34 -0400 david knepper [EMAIL PROTECTED] writes: For what it is worth: long range forecast for the 17, 18, calls for mostly sunny with temperatures in the 70's. Can this be true!! Weathermen have known to be wrong before. Dave, W3ST/W3CRA Publisher of the Collins Journal Secretary to the Collins Radio Association www.collinsra.com - the CRA Website Now with PayPal CRA Nets: 3.805 Mhz every Monday at 8 PM EDST and 14.253 Mhz every Saturday at 12 Noon EDST Collins Chatroom - Daily at 5 PM EDST on 7.208 Mhz __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Connectors
Thanks Brian and all who responded. I'll try the truck parts supply and the old stand by McMaster Carr. Is this a great list or what! Rick/K5IZ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Dayton Weather
On 5/9/07, Dan Kovatch [EMAIL PROTECTED] wrote: Let us remember that wx prognostication is one of the few professions where you can be wrong 50% of the time and still maintain your job!! Or put another way - right or wrong, you get paid the same. Accuracy isn't as important as showing up for work. Good hamfest wx is sometimes hard to come by. NEAR-Fest was beautiful outside of some brisk winds occasionally. Here's to the same for Dayton. ~ Todd, KA1KAQ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] Dayton Weather
The weather that drives up the Ohio Valley can be very unpredictable at times. As Dave points out, However, I do keep a raincoat and parka in the car just in case!! Back when it was in April, there were a few times when we even had snow flurries or the temps were in the upper 30's. Things generally aren't that extreme in May, but 2 or 3 years ago, we had lots of stuff floating around the flea market area after an almost all day rain. We've also had 80 plus sun burning temps too. If you go often enough, you'll learn to bring various types of apparel for the stay. Pete, wa2cwa On Wed, 9 May 2007 14:34:59 -0400 Todd, KA1KAQ [EMAIL PROTECTED] writes: On 5/9/07, Dan Kovatch [EMAIL PROTECTED] wrote: Let us remember that wx prognostication is one of the few professions where you can be wrong 50% of the time and still maintain your job!! Or put another way - right or wrong, you get paid the same. Accuracy isn't as important as showing up for work. Good hamfest wx is sometimes hard to come by. NEAR-Fest was beautiful outside of some brisk winds occasionally. Here's to the same for Dayton. ~ Todd, KA1KAQ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
RE: [AMRadio] Connectors
It's definitely what! ;-) Ed, VA3ES - Rick Brashear wrote: Is this a great list or what! __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
IF YOU LOOK AT THE OLD WIRE TABLES OF THE 1950 YOU WILL FIND THE INSULATION RATINGS ABOUT 20%OR MORE LESS THAN TODAYS. I've been reading the Gates BC-1T manual and found two instances where they state that #4 wire should be used. One says: 3) ...provide #4 or larger primary wiring from entrance box to transmitter. The other is about carrier shift at 100% modulation: 9) Carrier shift: 3% or less between 0 and 100% modulation provided wire size in point 3 (above) is followed... They have got to be kidding! Of course I know this is assuming possibly 24/7 commercial operation at the full KW, but still, #4 wire for a 1000 watt tx, PEP of 4000 watts w/100% modulation? What the heck am I missing here? My 200 amp mains (as the wire runs) to my shack junction box will be about 24 feet max, and then from the shack panel to the Gates will be no more than 12 feet. I plan to run #6 to the shack junction box from the 200 amp main, and then appropriate size to certain outlets in the shack. I will likely use #8 from the shack box through the wall to a 220 outlet for my Henry 3K Classic-X, and #6 to the Gates on separate circuits, but will NEVER have both of them going at the same time anyway. I suspect I will not use a wall outlet for the Gates and simply route the #6 wires directly to the primary terminals in the Gates, and use the panel breaker for emergency shutoff. Actually, for this short distance, mains to shack to rigs, I could probably get by with #8 so long as I don't run multiple KW rigs at one time ;) 73 Brian / wa5am -- Suburbia is where the developer bulldozes out the trees, then names the streets after them. - Bill Vaughan __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. - Join ISP.COM today - $8.95 internet , less than 1/2 the cost of AOL Try us out, http://www.isp.com/ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
I've been reading the Gates BC-1T manual and found two instances where they state that #4 wire should be used. Brian, There are two considerations for wire size. See NEC Code books The first is ampacity - the current carrying requirement. The second is voltage drop - the length of the run. At Gates they had no idea what the branch circuit wire run distance is so they made a specification that probably could apply to worst case. The rule is the max voltage drop on a branch circuit (mains box to load) should never be more than 5% and probably you would like less. Larry, W3LW __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
Larry, my 2001 reference says 2% for voltage drop. It also says that #8 in a three wire bundle will handle 40 amps. Jim/W5JO I forgot to mention. If you size the wire for the current, the 5% rule comes in at about 125 feet IF I remember correctly. Larry W3LW __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Wiring issues for BC-1T
I've been reading the Gates BC-1T manual and found two instances where they state that #4 wire should be used. One says: 3) ...provide #4 or larger primary wiring from entrance box to transmitter. The other is about carrier shift at 100% modulation: 9) Carrier shift: 3% or less between 0 and 100% modulation provided wire size in point 3 (above) is followed... They have got to be kidding! Of course I know this is assuming possibly 24/7 commercial operation at the full KW, but still, #4 wire for a 1000 watt tx, PEP of 4000 watts w/100% modulation? What the heck am I missing here? GE Brian, I don't think you're missing anything.but would suggest you step back into the time frame when transmitters like the BC-1T were popular. 1. Wiring insulation was a factor...It's better today than back then. 2. 1Kw and .25kw Bc transmitters were spread out over the USA and it was the small towns/rural communities that had local radio stations. Often, the transmitter was out in the country and often at the end or near end of a transmission line. Voltage sag was a real issue. Dimming the lights at 100% modulation wasn't a joke. Some engineering was done by a local electrician whose total experience level was connecting the chicken house to the main barn with two wires. No disrespect here, but just the truth. 3. I worked at a 5kw, 5-tower directional on 590kc (Collins driver and linear) and the transmitter was located in a rural county setting literally at the end of the line as far as AC was concerned. We had the power company locate pole pigs on a stand directly behind the transmitter building. The idea was to have as much voltage and current as possible as close to the transmitter as we could. Like your suggestion, we tied the mains directly to the transmitter and amplifier through a breaker panel with one humongous (sp) switch. Leads were as large as possible (I don't recall the gauge) but were short by most standards due to the pole pigs being located within a few feet of the transmitter. IR drop, etc.. By ham radio standards, you probably don't need all the punch that Gates and other manufacturers recommended. That said, I would wire the whole shebang with the largest wire I could afford. Just keeping in mind the rest of the AC transmission system from the power company to the breaker box in the house (and beyond). Hope this helps. Best of luck with a great old transmitter. We all want pictures when it's done. Preferably with the tubes lit and the background lighting subdued. YMMV 73 de W4MIL Chuck AOL now offers free email to everyone. Find out more about what's free from AOL at AOL.com. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
Jim, Well its all about drop and mains stiffness. I am sure with your short run, ampacity is all you have to worry about. My RCA BTA-1R1 manual calls for #8 for each conductor. I use #10 and my run is comparable to yours. My TX branch feed is from a submain fed with #6. The #6 run (150 amp mains) is about 60 feet and the #10 is around 25 feet. Larry Larry At 08:04 PM 5/9/2007, you wrote: Larry, my 2001 reference says 2% for voltage drop. It also says that #8 in a three wire bundle will handle 40 amps. Jim/W5JO I forgot to mention. If you size the wire for the current, the 5% rule comes in at about 125 feet IF I remember correctly. Larry W3LW __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
On 5/9/07, Larry Will [EMAIL PROTECTED] wrote: At Gates they had no idea what the branch circuit wire run distance is so they made a specification that probably could apply to worst case. I Love the Gates' manuals Larry. They are actually very good, however somewhat simplistic and even humorous on certain things like one section about powering up with both rectifiers says ..Are you feeling brave! I think a lot of this was they wanted the users to be safe, rather than sorry, or worse, dead. Some of it is written as if some appliance operator would actually be doing the installation, setup, and applying power to the tower. Thanks for the thoughts! Brian __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
[AMRadio] Knight C-577 Manual/Skiz
Anyone out there have a manual and/or schematic for the old Knight Kit C-577 speech compressor they wouldn't mind selling or copying for a fee? Thanks! g __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] 18.150 ?
I would love to but like many hams I do not have enough real estate to do that. I am liiking for land to build with enough room though! WB5OXQ - Original Message - From: VJB [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Wednesday, May 09, 2007 5:58 AM Subject: [AMRadio] 18.150 ? I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? Paul/VJB TV dinner still cooling? Check out Tonight's Picks on Yahoo! TV. http://tv.yahoo.com/ __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
Brian I think u answered a lot ur questions or concerns. The transmitter was designed for 24 hour / 7 day a week operation. at 1000 watts. I agree # 4 seems overkill but Gates wanted to get as stiff a power supply to the transmitter as possible. Those transmitters were used in a lot of small towns, mom and pop operations. The old branch circuit tables showed 30 amp #10, 40 amp #8, 50 amp # 6 etc. Then down at the bottom of the page the small print said for long distance runs keep the voltage drop less than 3% by increasing wire size. Anyway from the distances u mentioned dont think u will have a problem. Dont forget to double the distance in making voltage drop calulations because the current comes in on one wire and returns on the other wire. Bill Fondren K5PML A.R.S. - W5AMI [EMAIL PROTECTED] wrote: I've been reading the Gates BC-1T manual and found two instances where they state that #4 wire should be used. One says: 3) ...provide #4 or larger primary wiring from entrance box to transmitter. What the heck am I missing here? My 200 amp mains (as the wire runs) to my shack junction box will be about 24 feet max, and then from the shack panel to the Gates will be no more than 12 feet. - - - Brian / wa5am -- Suburbia is where the developer bulldozes out the trees, then names the streets after them. - Bill Vaughan __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
I believe I used #6 or #8 for mine, and even that seems like overkill. But the idea is to maintain the best line voltage regulation possible. The bigger the wire, the better. Better to have it and not need it, than to need it and not have it. But at the 1 kw power level (about 3000 watts drain off the a.c. mains) there is no need for #4 wire on a 220 volt circuit. A 110 volt circuit would be a different matter. One thing I found with the way the Gates is wired, is that it violates the electrical code. They ground the a.c. neutral directly to the transmitter cabinet. The neutral should never be strapped to ground anywhere except at one point and only one point: the ground rod located at the service entrance to the house. Inside the building past the circuit breaker box, the neutral wire should always be insulated and treated exactly the same as a hot wire. Not only is grounding the neutral dangerous and a violation of the NEC, it is an excellent way to create ground loops that result in inexplicable a.c. hum in various audio circuits. I lifted the neutral off the grounded cabinet in mine, and ran a separate ground wire from the cabinet to the electrical system ground. The danger in strapping the two together is that if the neutral wire should happen to open for any reason, the ground wire would be carrying the full neutral line current. This could result in a.c. voltage on some nominally grounded metallic objects. Of course, the Gates runs off 220 volts, so there should NORMALLY be very little if any neutral current. But I would still lift the neutral off the cabinet and ground the cabinet separately with a dedicated ground wire. Don k4kyv __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
[EMAIL PROTECTED] writes: Actually, for this short distance, mains to shack to rigs, I could probably get by with #8 so long as I don't run multiple KW rigs at one time ;) #4 wire would be considerable overkill in most installation situations, but if it was a long run, in a hot environment, using old style wire, maybe in conduit, then it probably made more sense. I used a standard 10/3 molded electric dryer cord exiting through a panel bushing that already existed about halfway up the left rear of my BC-1T. Inside the rig the primary wiring is #10 as well. The rig is sitting right next to the distribution panel and the outlet is mounted on the side of the box with #10 to the breaker. You can see it in this photo pretty well... http://www.wd8das.net/Gates/restored1.jpg I do have a problem with the circuit breaker tripping off once in awhile when I key the rig. Transmitters of this sort with no step-start were intended for time-delay fuse protection, not breakers. So far I haven't found a breaker with a time-delay action for this domestic panel, so I think I need to consider step-start in the power supply. Inside the rig there are two such fuses for additional protection. Steve WD8DAS ** See what's free at http://www.aol.com. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] 18.150 ?
You must be pulling our leg. The dipole is roughly 26 feet in length. You might be able in squeeze in it somewhere based on what you have already. See: http://www.qrz.com/hampix/q/x/wb5oxq.108400.jpg Pete, wa2cwa On Wed, 9 May 2007 21:06:25 -0500 WB5OXQ Jim in Waco [EMAIL PROTECTED] writes: I would love to but like many hams I do not have enough real estate to do that. I am liiking for land to build with enough room though! WB5OXQ - Original Message - From: VJB [EMAIL PROTECTED] To: amradio@mailman.qth.net Sent: Wednesday, May 09, 2007 5:58 AM Subject: [AMRadio] 18.150 ? I would like to cut a dipole for 18.150 and see what kind of AM activity we could stir up. The band is lightly loaded most of the time, so there's room for the occasional chat. Anyone else thought of that ? Paul/VJB __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] #4 wire from mains? - they gotta be kidding
Don't be afraid to use large wire in primary feeds. I have seen the result of skimping with the result conduit noticeably warms after about 10 - 15 minutes of operation. The worst consequence is a power sag when the transmitter comes on with the result that in the extreme, contactors won't operate correctly. The wire tables specify the minimum wire size, especially if long runs are contemplated (fifty feet or so). You will never regret using the next size, even if it is initially more expensive. The current price of copper does not make the decision any easier. Bill - Original Message - From: Bill Fondren [EMAIL PROTECTED] To: Discussion of AM Radio in the Amateur Service amradio@mailman.qth.net Sent: Wednesday, May 09, 2007 8:43 PM Subject: Re: [AMRadio] #4 wire from mains? - they gotta be kidding Brian I think u answered a lot ur questions or concerns. The transmitter was designed for 24 hour / 7 day a week operation. at 1000 watts. I agree # 4 seems overkill but Gates wanted to get as stiff a power supply to the transmitter as possible. Those transmitters were used in a lot of small towns, mom and pop operations. The old branch circuit tables showed 30 amp #10, 40 amp #8, 50 amp # 6 etc. Then down at the bottom of the page the small print said for long distance runs keep the voltage drop less than 3% by increasing wire size. Anyway from the distances u mentioned dont think u will have a problem. Dont forget to double the distance in making voltage drop calulations because the current comes in on one wire and returns on the other wire. Bill Fondren K5PML A.R.S. - W5AMI [EMAIL PROTECTED] wrote: I've been reading the Gates BC-1T manual and found two instances where they state that #4 wire should be used. One says: 3) ...provide #4 or larger primary wiring from entrance box to transmitter. What the heck am I missing here? My 200 amp mains (as the wire runs) to my shack junction box will be about 24 feet max, and then from the shack panel to the Gates will be no more than 12 feet. - - - Brian / wa5am -- Suburbia is where the developer bulldozes out the trees, then names the streets after them. - Bill Vaughan __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
Re: [AMRadio] 18.150 ?
[EMAIL PROTECTED] writes: I would love to but like many hams I do not have enough real estate to do that. I am liiking for land to build with enough room though! WB5OXQ A dipole for the 17m band is only about 26 feet long, 13 ft on a side. It could fit oneven a small roof in an inverted vee shape pretty easily, maybe from a chimney in the middle stretched over to either side. Steve WD8DAS ** See what's free at http://www.aol.com. __ AMRadio mailing list List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
